Versatile Reactivity of a Solvent-Coordinated Diiron(II) Compound: Synthesis and Dioxygen Reactivity of a Mixed-Valent Fe<sup>II</sup>Fe<sup>III</sup> Species
作者:Amit Majumdar、Ulf-Peter Apfel、Yunbo Jiang、Pierre Moënne-Loccoz、Stephen J. Lippard
DOI:10.1021/ic4019585
日期:2014.1.6
(Cp2Fe)(BF4) to yield a Robin–Day class II mixed-valent diiron(II,III) compound, [Fe2(N-Et-HPTB)(μ-PhCOO)(DMF)2](BF4)3 (5), two-electron oxidation with tris(4-bromophenyl)aminium hexachloroantimonate to generate [Fe2(N-Et-HPTB)Cl3(DMF)](BF4)2 (6), reaction with (2,2,6,6-tetramethylpiperidin-1-yl)oxyl to form [Fe5(N-Et-HPTB)2(μ-OH)4(μ-O)(DMF)2](BF4)4 (7), and reaction with dioxygen to yield an unstable peroxo compound
合成了一种新的DMF配位预组织二铁化合物[Fe 2 ( N -Et-HPTB)(DMF) 4 ](BF 4 ) 3 ( 1 ),避免了[Fe( N -Et-HPTB)]的形成(BF 4 ) 2 ( 10 ) 和 [Fe 2 ( N -Et-HPTB)(μ-MeCONH)](BF 4 ) 2 ( 11 ),其中N -Et-HPTB 是N , N , N ' 的阴离子, N'-四[2-(1-乙基苯并咪唑基)]-2-羟基-1,3-二氨基丙烷。化合物1是一种多功能反应物,已生成九种新化合物。 转化包括溶剂交换得到[Fe 2 ( N -Et-HPTB)(MeCN) 4 ](BF 4 ) 3 ( 2 ),取代得到[Fe 2 ( N -Et-HPTB)(μ-RCOO)]( BF 4 ) 2 ( 3 , R = Ph; 4 , RCOO = 4-甲基-2,6-二苯基苯甲酸酯]),通过 (Cp 2 Fe)(BF